Finite-Volume Time-Domain Analysis of a Cavity-Backed Archimedean Spiral Antenna

Fumeaux, Christophe; Baumann, D.; Vahldieck, R.

doi:10.1109/tap.2006.869935

Cited by 48 publications

(19 citation statements)

References 13 publications

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“…Since the introduction of FV methods for electromagnetics at the end of the 1980s [13], FVTD has demonstrated attractive features for the solution of the Maxwell's equations for complex, real-world problems [14][15][16][17]. The FVTD method's versatility arise from two main characteristics: On the one hand, FV can be implemented in an explicit TD scheme, and on the other hand, it is applied in an unstructured, polyhedral mesh.…”

Section: Dispersive Materials For the Fvtd Methodsmentioning

confidence: 99%

A modular implementation of dispersive materials for time-domain simulations with application to gold nanospheres at optical frequencies

Baumann¹,

Hafner²,

Li³

2009

Opt. Express

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Section: Dispersive Materials For the Fvtd Methodsmentioning

confidence: 99%

A modular implementation of dispersive materials for time-domain simulations with application to gold nanospheres at optical frequencies

Baumann¹,

Hafner²,

Li³

2009

Opt. Express

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“…The spiral is etched on a 0.254 mm thick low dielectric constant substrate ( r = 2.2). A higher r will reduce the lowest frequency by a few percent but will also draw the 18 GHz active zone closer to the centre where interactions with the balun can degrade the high-frequency performance [10]. Proper termination of the free ends of the spiral is critical to achieve good axial ratio in the 1 to 2 GHz band.…”

Section: Rationale For New Spiral Antennamentioning

confidence: 99%

A compact 1 to 18 GHz planar spiral antenna for interferometer and other direction finding applications

Baker¹,

Toit²

2012

2012 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)

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This paper discusses the development of a compact light-weight planar spiral antenna for use in amplitude comparison and interferometer direction finding (DF) applications covering 1 to 18 GHz. The antenna uses a slowwave (zigzag) spiral radiator which results in a cavity diameter which is only 68% of the wavelength at 1 GHz. The two-arm spiral is fed by a Marchand balun and achieves a VSWR of less than 1.5:1 over almost the entire 1 to 18 GHz frequency range. The spiral antennas are supplied in phase and amplitude tracking sets for wideband DF applications. Amplitude and phase tracking performance for a fully integrated linear interferometer DF panel which includes the radome and feed cable effects are presented. Phase DF performance for the panel with pulse receivers as measured in an anechoic chamber is discussed.

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“…for scattering and radiation problems with strong inhomogeneities and small details embedded in larger structures, e.g. [14], [15]. The in-house implementation of the FVTD technique used in this study is based on a cell-centered scheme with upwind fluxes [16].…”

Section: B Fvtdmentioning

confidence: 99%

Time-domain simulations of a 31-antenna array for breast cancer imaging

Klemm

Baumann

Craddock

2011

2011 IEEE International Symposium on Antennas and Propagation (APSURSI)

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Abstract-In this paper we discuss challenges related with timedomain simulations of a complete microwave radar imaging system for breast cancer detection. Two different numerical methods are considered to address this demanding electromagnetic problem featuring 31 ultra-wideband antennas. The first method is the Finite Integration Technique (FIT) applied in a regular grid and implemented in a commercial solver, whereas the second method is an in-house developed FiniteVolume Time-Domain (FVTD) code applied in a tetrahedral mesh. Our work focuses on the fundamental differences between the two approaches for the comprehensive full-wave modeling of the considered problem. The emphasis of the comparison is placed on the computational cost, which reveals the strengths and limitations of both methods for the problem considered.

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Finite-Volume Time-Domain Analysis of a Cavity-Backed Archimedean Spiral Antenna

Cited by 48 publications

References 13 publications

A modular implementation of dispersive materials for time-domain simulations with application to gold nanospheres at optical frequencies

A modular implementation of dispersive materials for time-domain simulations with application to gold nanospheres at optical frequencies

A compact 1 to 18 GHz planar spiral antenna for interferometer and other direction finding applications

Time-domain simulations of a 31-antenna array for breast cancer imaging

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